12504020022 has 24 divisors (see below), whose sum is σ = 29176047264. Its totient is φ = 3847390704.

The previous prime is 12504019999. The next prime is 12504020041. The reversal of 12504020022 is 22002040521.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12504019977 and 12504020004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26717758 + ... + 26718225.

It is an arithmetic number, because the mean of its divisors is an integer number (1215668636).

Almost surely, 2^12504020022 is an apocalyptic number.

12504020022 is an abundant number, since it is smaller than the sum of its proper divisors (16672027242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12504020022 is a wasteful number, since it uses less digits than its factorization.

12504020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53436004 (or 53436001 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

Adding to 12504020022 its reverse (22002040521), we get a palindrome (34506060543).

The spelling of 12504020022 in words is "twelve billion, five hundred four million, twenty thousand, twenty-two".